Prevent accessing rootUri if there's no git repository (#2727) #11023

Job	Run time
lint_node	27s
Ruby 3.1 on ubuntu-latest	14m 51s
build_node (ubuntu-latest)	1m 9s
Ruby 3.2 on ubuntu-latest	14m 36s
build_node (macos-latest)	1m 12s
Ruby 3.3 on ubuntu-latest	12m 7s
lint_ruby	20s
Verify Jekyll website builds	9s
build_node (windows-latest)	7m 39s
Ruby 3.1 on macos-latest	9m 12s
Ruby 3.2 on macos-latest	8m 16s
Ruby 3.3 on macos-latest	6m 11s
Ruby 3.1 on windows-latest	20m 51s
Ruby 3.2 on windows-latest	20m 1s
Ruby 3.3 on windows-latest	21m 31s
	2h 18m 32s

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